Bently Nevada 330104-03-06-05-02-00 3300 XL 8 mm Proximity Probe

Product Overview

When unplanned downtime threatens production targets, the Bently Nevada 330104-03-06-05-02-00 3300 XL 8 mm proximity probe delivers precise, reliable measurements to keep your machinery running. This metric probe, part of the proven 3300 XL series, offers a linear range of 2 mm (80 mils) starting at approximately 0.25 mm (10 mils) from the target. It provides the accuracy needed for critical vibration and position monitoring in rotating equipment, helping you avoid costly failures and extend asset life.

Technical Specifications

The 330104-03-06-05-02-00 features a probe tip made of polyphenylene sulfide (PPS) and a case constructed from AISI 303 or 304 stainless steel. Its unthreaded length is 30 mm, overall case length is 60 mm, and total length is 0.5 meter (1.6 feet). The probe uses a miniature coaxial ClickLoc connector with standard cable. Nominal DC resistance from center conductor to outer conductor is 7.45 ± 0.50 ohms at 0.5 m. Maximum probe case torque is 33.9 N·m (300 in·lbf), with a recommended torque of 11.2 N·m (100 in·lbf). The probe case thread is M10x1, with a maximum thread engagement of 15 mm. Operating and storage temperature range for the standard probe is -52°C to +177°C (-62°F to +350°F).

Cost-Efficient Reliability

Investing in the 330104-03-06-05-02-00 reduces total cost of ownership by minimizing false readings and extending maintenance intervals. Its robust stainless steel case and PPS tip withstand harsh industrial environments, reducing replacement frequency. The linear range from 0.25 to 2.3 mm (10 to 90 mils) ensures consistent performance, allowing you to detect early signs of bearing wear or imbalance before they escalate into expensive repairs. With a recommended gap setting for radial vibration of -9 Vdc (approximately 1.27 mm or 50 mils), setup is straightforward, saving labor time and reducing commissioning costs.

Industry Applications

This proximity probe excels in monitoring critical rotating machinery such as turbines, compressors, pumps, and motors. In a steam turbine application, the 330104-03-06-05-02-00 provides continuous shaft vibration data, enabling predictive maintenance that avoids unplanned outages. For large centrifugal compressors, its stable output over temperature extremes ensures accurate readings even in high-heat environments up to +177°C. By catching issues early, operators reduce downtime and spare parts inventory costs.

Installation Guidance

Proper installation maximizes the probe's performance. Use 3-conductor shielded triad cable with tinned field wiring, sized 0.2 to 1.5 mm² (16 to 24 AWG). Maximum field wiring length between the 3300 XL Proximitor Sensor and the monitor is 305 meters (1,000 feet). Torque the probe to the recommended 11.2 N·m (100 in·lbf) to ensure a secure seal without damaging the housing. Set the gap to -9 Vdc for radial vibration monitoring. Avoid exposing the probe to temperatures below -34°C (-30°F) to prevent premature failure of the pressure seal.

Maintenance and Reliability

Routine inspection of the probe and cable connections helps maintain measurement accuracy. The probe's PPS tip resists chemical attack, and the stainless steel case provides corrosion resistance in humid environments. Relative humidity testing shows less than a 3% change in Average Scale Factor (ASF) after 56 days at 93% humidity per IEC 68-2-3. Check the Viton O-ring seal periodically if the probe is used in pressurized applications. For extended temperature range needs, contact Bently Nevada for options rated to +218°C (+425°F) at the tip.

Selection and Purchasing Advice

Before ordering the 330104-03-06-05-02-00, verify that your system requires an 8 mm metric probe with M10x1 thread and 0.5 meter cable length. This model includes armor and a miniature coaxial ClickLoc connector. For agency approvals, this variant is marked "Not required". If you need intrinsic safety or non-incendive ratings, consult the appropriate drawings (141092 or 140979) for barrier or isolator requirements. Plcmatrix.com offers this Bently Nevada probe with expert support to help you select the correct configuration for your application, ensuring you get the right part without costly returns.